haml/haml — pull request #642 by wedgex (2013-02-27 15:31:22+00:00)
Title: Removing dependency on rails when plugging haml into ActionView.

Ran into this while adding haml 4.0 to a stand alone ActionMailer app. The ugly option's default was being set based off of the Rails environment, changed it to default to true if Rails isn't present.